I'm not sure what enhancing defaults would look like, especially for protocols.
Are you suggesting if there's a protocol like:
protocol A {
func requiredFunction(a, b, c) -> T
}
that you could then extend
extension A {
func requiredFunction(a, b = somedefault, c) -> T;
}
as a declaration without an implementation?
-- E
> On Jun 13, 2016, at 2:17 AM, Haravikk via swift-evolution
> <swift-evolution@swift.org> wrote:
>
> As Charlie says the default value may not actually be public.
>
> There was a thread a while ago about allowing defaults to be defined in
> protocols, but I don’t think it ever got made into a proposal; this would be
> useful however in cases where you want a consistent, known default. Either
> that or you need the option of declaring a default value as public perhaps?
>
>> On 11 Jun 2016, at 14:35, Adrian Zubarev via swift-evolution
>> <swift-evolution@swift.org <mailto:swift-evolution@swift.org>> wrote:
>>
>> I just installed the current Swift 3 snapshot to play around with it (last
>> from may crashed my Xcode all the time).
>>
>> I wanted to re-build a small project with (currently implemented) Swift 3
>> changes. Basically I had to look up on GitHub what the default value for
>> deinitialize(count:) function was for UnsafeMutablePointer, just because
>> Xcode and the docs can’t tell me that:
>>
>> /// De-initialize the `count` `Pointee`s starting at `self`, returning
>> /// their memory to an uninitialized state.
>> ///
>> /// - Precondition: The `Pointee`s at `self..<self + count` are
>> /// initialized.
>> ///
>> /// - Postcondition: The memory is uninitialized.
>> public func deinitialize(count: Int = default)
>> To cut it short:
>>
>> Could we make default function parameter values more transparent in Swift 3?
>> Why are default parameter values translated to default rather than the
>> actual value?
>> Can we make this independent from docs?
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